Tripping device



Oct. 11, 1932. w. L. MCNAMARA TRIPPING DEVICE Filed Oct. 19. 1928' v2Sheets-Sheet I INVENTOR Wz/ZzazrzLJIk/lkmara ATTORNEY Oct. 11, 1932.

w. MCNAMARA 1,881,824

TRIPPING DEVICE Filed Oct. 19, 1928 2 Sheets-Sheet 2 f7 Z INVENTOR 4 64ATTORNEY Patented 0 d. 11 1 932 WILLIAM L. MCNAMARA; or{LONNELLSVIL11E,"PENNSYJZNQEGtTIfx; nss'renonrol GAIS'IAN GLASSCOMPANY,- or CONNELLSVILLE, rnnnsynvamn, noonronerion 0E" DELA-.

WARE r Application filed The present invention relates to trippingdevices for leers andis animpro vement in part of theiinventiondisclosed in myApplication S. N. 297,661, filed August 6, 1928, PatentNo. 1,842,912. i v a I In transferring vessels to leers by means ofloaders actuated by movingvessels, diificultly has been encountered dueto vesselsbe- I v de atripping device which-moves with the ing derangedor broken when the loader moves inwardly toward the leer. The vessels inmany cases are relatively tall in com parison with the size of theirbases which makes them topple over if not moved smooth- .ly. The vesselsmaybe conveyed to a position in front of the loader by means of acontinuously moving belt. Withthe present loaders ofthis type, theforward vessel engages the tripping device and presses'against it underthe influence of the moving belt and is in this position when the tripis actuated and the transferring mechanism moved forward to transfer thevessels into the leer. The forward vessel,in-itsmovement toward theleer, must slide across the tripping member. In many instances, theforward vessel fails to engage the trip squarely and this increases thedifliculty. The end of the pusher or transferring mechanism has to clearthe movable trip which causes the. vessel tobe engaged substantially bythe end of the pusher. Frequently, vessels are caught between the end ofthe pusher and the side of the leer and crushed. The glass from thebroken vessel tends to impair both the operation of the leer and theloader. In some cases, the forward vessel engages the trip prior to thepusher being in position to start its cycle of movement, which is veryobjec tionable.

The present invention eliminates these dlfficulties by avoiding thesliding movement between the vessel and the trip and by securelysupporting the vessels at alltimes until they are deposited withintheleer. In addition, the trip cannot be operated until the loader is inposition to start. its cycle of movement. I

An object of the invention is to provide an inexpensive tripping devicewhich is simple in operation and whichwwill eliminateor 'rn rrine'nnvron Y i October, 19, 1928. Serial No. 313,479.

minimize derangement of the vesSflS. 0693- sioned by} contact with thedevice.

Another object of the invention s to elimi natethe breakage of vesselsoccasioned by the forward vessel being caught between the end ofthetransferring nechanismiand the -S1Cl6 of the leer. V

Another object of the invention is to provessels to hold them in properposition.

vide atripping: device which is movable with t!" Another ob ect efthe,inventlon is to proa, mechanism for transferring the vessels I 7 intoproper position and which slides on the means whlch 1t operates toinitiatethe move ment of the mechanisml ()ther and further ob 'ects ofthe invention will. be a'pparent'from an understandingof theillustrativeembodiment about to be-described, or Will be indicated in the appendedclaims, and various advantages not referred to herein will occur to oneskilled in the art 9 upon employment of the invention in prac- .tice.- fI A preferred embodiment of the invention has been chosen for thepurpose of illustrationand description and is shown in the accompany ngdrawmgs,-where n Figure I is a sideelevational view of a leer loadertheend of a leer'with a tripping device in accordance with the presentinvention attached thereto;

Figure 2 is an'end elevational vieW- of the Y inechanismshown in Figure1;

Figure 3 .is .a' vertical sectional view through the center oft-hetripping device showing it attached to thetransferring mechanism; and

Figure 4 is a-"pefspective view of thetripping device: v p

Referring more particularly to the drawings there is shown a leer lhavingthe' usual opening 2, for the receptionof glass tO be annealed. Aconveyor belt 4 extends through, the opening 'and'ith rough" the leerfor conveying the ware at the proper rate of extending through the box 5and supported by the bottom thereof. The belt is directly adjacent theconveyor 1 in the leer and has a narrow apron 8 extending between theconveyor6 -and the leer conveyor 4: in order to give a smooth surfaceover which the'vessels travel. a

The vessels 9 travel on conveyors or otherwise, andeventually reach theconveyor 6 and. form in a contmuous line thereon as shown, across theend of the leer. It will be be noted that these vessels are inclosedinthe box 5 and'that a pair 'of-horizontal bars 10 I v secured togetherby vertical members 11 form a pusher 18 for pushing the vessels'off the'belt 6 over the apron T8 and onto the conveyorl. Themechanism foroperating the pusher is not shown herein but preferably the pusherismoved forward to push the row of vessels onto the leer conveyor, thenupward to clear the incoming vessels on the belt 6,

then rearward over the incoming vessels, and

"downwardly to its original position.

'ver'1-2 pivotedon the bracket 14 which'may be rigidly attached to theleer The move- 'ment of this leveris adapted to initiate each cycle ofmovement of the transferring mechanism. Naturally, this maybe done inmany ways, for example, by electrically operated means, the movement ofthe lever 12 closing a particular circuit. Preferably, the transferringmechanism is operated by 'means of an air valve 15 which, with the stem16 pressed inwardly, admits air to the cylinders which will give to thepusher members the cycle of movements described above. A

suitable mechanismfor this purpose may be found in my prior application,S. N. 297,661. ,Mounted on the end of the pusher members 10 is atripping'device 17 comprising an L-shaped casting 18. The shorter leg ofthe casting, is attached by means of suitable bolts 19 to themembers10'; the longer part of the" casting extends transversely over the belt6 in position to be engaged bythe forward vessel moving thereonirrespective of the size'thereof. On the back of the member ,18 are apair of extensions 20 adapted to receive a pin 21 held in position byscrews 22. The small pin 21 extends through the bear- .ing 24 topivotthedownwardly depending member 25. The latter has attached to its lower endby means of the bolts 27, a vessel engaging extension26. The extension26 is mounted below the loweredge of the member 17 and extends asubstantial distance inwardly beyond the 'member '17, as will be notedin Figure The outward movement of the member 25, when engaged by avessel .on the conveyor 6, is determined by the yoke 28 formed by thecross-member 29 bolted to the extensions 30 onthe L-shaped member .18.-Secured to'the back of the pivoted mem ber 25 is a horizontal portion 32which is adapted to engage the'lever 12. V

In the operationof the device, thevessels 9 are conveyed to the conveyorin any suitable-manner and are carried by it'to a position in front ofthepusher bars 10, as shown in Fig. 1. The distance between therespective vesselson the: conveyor may be determined by mechanisms suchas disks intermediate the conveyors rotated at the desired speed. As therowof vessels continues to. 'move forward, the forward vessel35 engagesthe'lower end 26 0f the-pivoted member 25,

which moves outwardly as shown in Figure 3 7 so .that its laterally;extending part 32 enj of air supply'tosuitable' cylinders, not shown,for moving'the pusher, formed by the bars 10 and 11, inwardto push thevessels intofthe' leer. As the pusher 10 moves inwardly, the

tripping device 17 attached to. the transfer ring mechanism necessarilymoves with it, as shown "inFigure-2. The result is. that the back of themember 32 slides on the lever 12, while 'the'vessel 35 rests againstthetripping device. This forward vessel is,-therefore, securelysupported on two sides and prevented from' topplingover, as wouldfrequently be the case if the vessel had to slide against the memberengaging its side. "In other words, the sliding movement is between themember 32 and the'lever 12, both of which are pivoted in position as tothe movement in the direction of the conveyor gages and moves the lever12. As explained, the movement of the lever 12 presses inwardly thevalvestem 16 which connects a source belt 6 and secured against anyderangement.

When the vesselshave reached their proper position within theleer, thetransferring mechanism. is moved directly upward which does not affectthe containers, since ordinarily they are conical or cylindrical, thoughnot necessarily of this shape. "Afterwards,

the pusher is moved rearwardly over the incoming vessels on the belt 6and downwardly to its original position ready for a second cy-' cle' ofmovement. If by any chance, the fore most vessel 35 should reach the.end of its travel or should reach the position where it would ordinarilyengage the tripping device before the tripping device is inproperrposition to' be engaged, the vessel merely continues along theconveyor belt 6 and falls on the floor. However, were the vessel engag-'ing means attached directly to the lever 12,

the vessel would operate this lever irrespective of whether or not thepusher members a 10 were in position to move forward. As a result, thelever 12 might be .trippedrepeatthe vessels moved into the leer.

no relative movement between the vessels and the trippmg device duringthe movement 1nto edly before the transferring mechanism reached itsoriginal position. Such a con-' operator to get the device back to itsoperating condition and to adjust the rate of movement of the conveyor6.

It will be seen that the tripping device provided herein is simpleinconstruction and may be readily applied to existing leer loaders. It isattached directly to the transferring mechanism; and in addition totripping the mechanism for actuating the transferring device, it moveswith and supports There is the leer. The trippin device, being attachedto the transferring mechanism, is in position to be tripped only whenthe transferring mechanism is 'in position to commence its cycle ofoperation; hence the vessels cannot operate the trip unless the conveyormechanism is in proper position. The entire mechanism is inclosed in asuitable box-like structure and isoperated by vertical: membersextending outside of the closed end of the leer to avoid waste of heatand draughts of air which might afiect the annealing operation. Further,the device is rigid in construction and fully capable of withstandingthe rough usage to which it may be subjected.

As various changes may be made in the form, construction and arrangementof the parts of the preferred embodiment described above withoutdeparting from the spirit of the invention, it is to be understood thatall matter herein ,set forth is to be interpreted as illustrative andnot in a limited sense.

Having thus described my invention, I claim:

1. In a trip mechanism, the combination of a transferring device formoving a row of vessels from a conveyor, a valve adapted to effect theoperation of said device, a lever for operating said valve, a bracketsecured to sa1d vessel transferring device, and a p1voted member adaptedto oscillate laterally with respect to the movement of the transferringdevice, said pivoted member comprising an extending portion at the lowerend thereof adapted to be engaged by one of the vessels moving along theconveyor, and a second ex tending portion above said first portionadapted to engage said lever, whereby the transferring device isoperated to move the vessels from the conveyor.

2. In a device of the class described, the

combination of a conveyor adapted to trans fer vessels, a pusherextending along said conveyor for moving the vessels transverselythereof, a lever adapted to actuate means for operating said pusher, andan L-sh'aped mem ber attached by one sideto the further end of thepusher, the other side being normally in the path of the vessels movingon the conveyor, saidaside extending. acrossrthe Iconveyor having apivotedmember suspended therefromadapted to be oscillated by a vesselonlthe conveyor and, in turn, to actuatesai'd lever for operating saidpusher.

3. A trip ping device comprising an L-" shaped member, a downwardlyextending arm pivoted tosaid member, and a stop-porextensionons'ai-dfarm adapted to engage a with respect to said pusher forcontrolling the operation thereof and a second leverpivoted" onsaidpusher atthe side of said firstlever lever adapted to operate: amechanism for V for oscillating said first lever when the pusher is inineffective position.

5. In a device of the class described, the

combination of a conveyor for moving vessels, a member extending alongsaid conveyor for pushing the vessels transversely thereof,

and an elongated depending lever forv controlling a mechanism adapted tooperate said pushing member, and asuspended oscillating device attachedto said member normally in pivoted substantially in alignment therewithwhen said device is in ineffective position, a

supporting member attached to said vessel transferring device, a pivotedmember suspended from said supporting member, portions on the back ofsaid pivoted member adapted to engage said trip lever, and'forwardlyextending means on said pivoted member adaptedto be engaged by movingvessels.

7. In a tripping device, the combination of a downwardly dependingpivoted member adapted to be engaged and oscillated by a vessel movingalong a conveyor to actuate means for operating a pusher, and a pusheradapted to move transversely to the plane in which said member isoscillated for transferring the vessel into a leer, said member beingattached to the pusher and being adapted to move with the vessel as itis transferred into the leer, whereby said, pusher cannot be operateduntil it has returned to its normal position.

8. In a trlpping device, the combination of aconveyor for transferringaplurality of vessels, va pusher for moving the vessels transverselythereof, a supporting member atsaid member adapted to be actuatedby oneof the vessels, portions on said arm forcounterbalancing oscillationthereof, and stop portions'on said. supporting member for limiting theoscillation of said arm aftera Vessel'has moved intoengagement-therewith. p 9. Ina device of the class described, thecombination of a conveyor for'presenting .a roW of vessels, at pusherfor moving said vessels transversely thereof, a pivoted arm membersuspendedfrom said pusher in the path; of theves'sels moving on theconveyor, an extension onsaid arm member adapted to facilitate the:engagement and oscillation v thereof byone'of the vessels a valve forcontrolling the operationrof said pusher, a lever pivoted intermediatesaid valve and arm" member, said arm member being adapted to V oscillatesaid lever andthereby operate said valve, whereby the pusher moves therow of rvessels from the conveyor.

Y NVILLIAM L.v MONAMARA".

